Burr remover



March 29, 1932. H. F. KElL 1,851,012

BURR REMOVER Filed Jan. 10. 1927 ATTORNEY PatentedMar. 29.1w i 1,851,012

unit-En STATES imam; oF icr;

. HENRY r. KEIL, or SCARSDALE, unwo'nx, Assrenon 'ro FRANCISFKVEVIL a somind, I, a CORPORATIQNLQFSNEW YORK v d BUnn nEMovEn Application filed any 10, 192 7. Serial No; 160,163.

. This invention relates @to burr removers struction 14 which carries a cutting or abrad and with regard. to its more specific features ing device. T he frame 14. preferably takes to a device for removing roughness orburrs the form of a substantially upright member from keysor the like. i l which-is pivotedlatitslower end in the base Oneof the ob ectsfof the invention is to and aboutajhorizontal" pivot pin 15. For 755 7 provide a device of the above nature which convenience of, description, the side of the is-practical and efficient. Another object is device seen in Figure l will be-termed the to provide a device which will quickly. and front or forward side. Thepivotpin efficiently cut down or smooththe edges of passes through an upwardly projecting lug 10 an implement having an irregular surface 'or '16 ofthe base 10'and through apa'ir of lugs (30 edge such, for example, as arkey; Another Hand 18 which project rearwardlyfrom the object is to provide a device capable oflquickbottom portlon of the support or frame 14. ly and evenly removing from the edges of a The frame 14 is thus, as viewed from the side,

key the burrs or rough projections left-by the substantially L-shaped with the pivot pin .15 key cutting process. Another object 15 to passing through the rearwardly extending 5 provide a device of the. above nature which is shortarm of the L.. ,1 j I i V j simple and inexpensive. Other objects will As shown in Figure2,the lug 16of the base be in part obvious or in part pointed out here- ;.1s provided with a shoulder 19' and, between inafter. i 1 "the two lugsl? and 18, the partj20ofthie 20 The invention accordingly consists in the frame 14 is shaped to enact with this shoulder 70 features of construction, combinations of ele-. 19 to limit the rearward swinging of the ments, and arrangements of partsas will be frame 14 about the pivot'15'. exemplified in the structure to be hereinafter Suitable resilient means is provided for described and the scope of the application'of n rmally holding the frame 14. agains h ,2 which will be indicated in the following s op 1 This means preferably takes h 7 formof a plunger 21 which is slidably mount claims. j V In the accompanying drawings in which is edin an opening 22 of-the base and which is V shown one of the various possible embo'diurged upwardlj by 'aspring 23, the spring-23 ments f thi i ti 7 c p n being positioned within the opening 22 about Figure 1 is a front elevation;-

V j V. v V Figure 2-is asection taken alongthe'line' V ew. The upper en'dof 'theplunger 21 en- 22 of Figure 1 and showing in dotted lines ges e wer end of the frame 14' adjacent the device in operation; itsfront edge and the upwardpressure ofthe Figure 3 is a top plan view, and 1 Figure 4 is a section taken-along k 44 of Figure 1. i I V ltion, asviewedfin-Fig'ure 2, and normally Similar reference characters refer to simi- 'holds the frame against the sto 19; Pref lar parts throughout the several views of the: crably, when the par I is i engag ment d i g :with the stop shoulder 19, the frame 14 isine spring-continually tends to swing'the' frame 1 Referring now to thedrawingsin detail, 'clined slightly rearwardly. r p 90 i 7 there is shown a. suitable base lOwhichis .*The cutting 'or abrai'lingdevice'is supportpreferably a metal castingand which may be d at the PPB T end of th frame l d p secured to any desired support or table'll by erably takes the form? of a pair of opposed means of screws or other suitable fastening cutting devices 24'anjd- 25 between which the 5 devices 12. Preferably the base 1O fhas afimplement tobe operated upo'nis drawn. 5

flanged portion 10a which gives it a firm These devices, as shown'inthe drawingstake stance upon the support and which; is prothe form-of hardened steel disks having opvided with openings 13 to accommodate the, posed cutting ,edges24u and 25a. The disks screws 12 or bolts. c 24' and 25 are rotatably mounted upon'pins Supported upon the base 10 is a frameicon- 26 and, 27. respectively so that they may: be-

7 the plunoer and being thereby concealed from so the line about the axis15 in a counter-clockwise direcrotated and thereby bring into operative psition any portion of their cutting edges. As is seen in Figure 2, the frame 14 is preferably concave on its rear surface and the two disks 24 and 25 are mounted against the two oppositely sloping portions of this surface so that their axes are not parallel. This brings the cutting edges 24a and 25a into position for most efficient coaction. V v

This apparatus is of particular advantage for removing burrs from the square edges of keys after the keys have been out, but it is to be understood that the features of this invention. may be used to advantage in other fields. Referring now to Figures 1 and 2, there is shown in dotted l nes a key 28 being operated upon by this device. The key has been cutto form therein the notches 28a, and this cutting operation ordinarily leaves upon the side edges 28b and 280 (Figure 1) rough projecting burrs. The irregular edge of the key renders it extremely diflicult, if not impossible, to satisfactorily remove'these burrs with any of the devices generally in use.

With the apparatus disclosed herein, the key is placed in position between the two disks 24 and 25, as shown in the drawings,

and is'then drawn th-erebetween in a forward direction and with a downward pressure. The forward pull and slight downward pressure swing the frame 14 forwardly about the pivot pin 15 against the'action of the spring 23, the frame swinging into a position s ch as that sho'wnin dottedlines in Figure 2. Thereafter, as the key is drawn through between the cutting or abrading edges 24a and 25a, the spring holds the cutter with a yielding pressure against the key edges. As the irregular surface of the key is drawn between the cutting edges, the frame 14 swings back and forth about its pivot. In spite of the irregular shape' of the key surface, the key is drawn through quickly and smoothly and every portion of the edges 28?) and 280 are acted upon by the cutters and evenly smoothed off. The key does notbind or am between the cutting edges and the roughsurfaces thereof are smoothed off quickly and with the greatest convenience.

From the foregoing, it will be seen that there is herein provided a device which achieves the objects of this invention and accomplishes advantages of distinct practical value. The device is strong and rugged, with out parts which will wear out quickly or become disarranged and, moreover, the construction is simple and inexpensive to build.

In this latter connection, it is to be noted that the recess 22 is preferably substantially cylindrical and may be conveniently formed as by drilling; the bottom wall 22a of the recess 22 has drilled therethrough a hole indicated at 22?), concentric with the bore of the opening 22 but preferably of lesser diameter. The plunger generally indicated at 21 is shaped to provide an upper portion 21a adapted to be slidably received into the larger bore or into the opening 22 while the lower portion 21b of the plunger 21 is of lesser diameter and is slidably receive into the opening 22?) in the bottom wall 22a.

The spring 23 surrounds the portion 21b of the plunger 21 and its coils or turns are received in the space between the portion 21b of the plunger and the walls of the recess 22. The upper end of the spring 23 abuts against the enlarged portion 21a of the plunger 21 and the lower end of the spring abut-s against the end wall 22a. Thus, the springis compactly'housed while the plunger 21 is supported for highly efficient and ready sliding action. Moreover, the parts will be seen to be capable of rapid assembly.

In assembling the several parts of the device, the plunger 21 with the spring 23 thereabout is first inserted into the opening 22; the substantially L-shaped frame 14 is thereupon positioned so that the lugs 1'7 and 18 of the frame 14 and the lug 16 of the base are so alined that the pivot pin may be passed through the apertures in these lugs. The arsembly of the frame 14 to the base member 10 will thus be seen to effect first the desired positioning of the lower and forward port-ion of the frame14 with respect to the plunger 21 and secondly a locking of the plunger 21 against withdrawal thereof from the recess 22, as will be clearly seen from Figure 2. The portion of the frame '14, in coacting with the stop orshoulder 19 on the lug 16 of the frame 10, prevents the frame 14 from being swung in counter-cl.ockwise direction, as viewed in Figure 2, to such an extent as to permit the Withdrawal of the plunger 21 from the base 10. There is thus achieved not only convenient and rapid assembly of the device, but also highly effective action and nicety of operation when in use.

It willthus be seen that there has been provided in this invention an apparatus in which many thoroughly practical advantages are successfully achieved. t will, moreover, be seen that the apparatus is of durable and rugged construction throughout, is of eflicient action, and well adapted'to meet the varying conditions of hard practical use.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

I claim as my invention:

1. In a device of the class described, in combination, a base,a supporting frame pivotally mounted upon said base, a pair of opposed cutting devices mounted upon said frame and adapted to cut the two sides of an implement drawn therebetween, said frame 'pivot in a corresponding direction as said combination, a base,

, plement pressed cuttting action takes place, a stop for limiting the swinging of said frame in the opposite direction, and spring means normally holding said frame against said stop.

3. Ina device of the class described, in

supporting frame mounted upon said base and pivoted thereon adjacent its lower end about a substantially horizontal axis, a device having acutting edge and mounted in the upper portion of said frame and adapted when an implement is drawn thereacross in one direction to cut thetwo sides thereof, said frame being adapted to swing about its pivot in a corresponding. direction as said cutting a stop for limiting the action takes place,

the opposite direcswinging of said frame in tion, a plunger slidably mounted in an opening in, said base adjacent to said frame, and a spring urging said plunger against said frame and normally holding said frame against said stop.

4. In a device of the class described, a base, a supporting frame2i combination, cutting means mounted upon said framean adapted toact upon the two sides of an implement pressed into engagement therewith and drawn thereacross, means mounting said frame upon said base for movement thereon under the urge of said implement,

and means acting agalnst said movement comprising a plunger shdably mounted in an opening in said base, and a spring about said plunger and concealed within said recess and urging said plunger outwardly against said frame.

5. In a device of the class described, inf

combination, a base, a supporting frame, cutting means mounted upon said frame and adapted to act upon the two sides of an im into engagement therewith and drawn thereacross, means mounting said frame upon said base for movement thereon under the urge of said implement, spring means acting against said movement comprising a spring pressed member slidably.

mounted in said base and bearing against said frame, and means for limiting the move:

edge substantially i'ng said device for tially thedirection in: whichian implement,

a substantially upright drawn across the latter, 7 mg to oppose sald movement ofsald devlce,

support, a] stop which'said device swings :under the urge of ing such a tension combination,

opposed cutting members mounted upon said frame and .adapted. to act respectively'upon base,

me'ntjof said-frame under the urge of said 7 spring. means; said last means, 111' con] unction with saidframe', locking said sprlng pressedmemberagainst-removal from said {In a device of-the classdescribed, in

base.

combination, ab'ase, a supporting frame, cutting means mounted upon said frame and adapted to act uponthe two sides of an implement pressed into engagement therewith and drawn 'nection between said thereacross, afpivotal conframe and said base, a

member slidably mounted in a-recess in said base, a spring urging said slidable member outwardly against aportion of "said frame and tending to swing said frame about: its pivot, and :a stop forlimitingsaid swinging movement, said frame thereby-holding said slidable member from-being expelled from said recess bysaid spring.

I-ne adevice of the combination, a rigid device having a cutting V-shaped, means mountmovement in substan.- a

class described, in I pressed into said V-shaped cutting edge, is,

resilient means. act

and means limiting'therange of movement of said device.

8'. Ina device of the class described, in

combination, asupport, a device having a cutting edge and pivotally mounted uponsaid support, spring: means urging said dea vice to swlng-in one direction relative to said for limiting the extent to said spring Qmeans, said spring means havhaving .7 an irregular edge ;has1-.the, latter pressed against said'cutting edge and drawn across the latter :in a direction to swing-said device in the other directionirelative to said support, said' spring means permits the de- ,vice to yieldingly move .under'the urge of said; implement, and means for limitinggthe that, when. an implement 05' extent to: which said device? may swing against the tension of said spring.

- 9. In a device of the 'class described,

supporting frame, 1 a pair of the side edges of a notched'face of-a key when the latter is drawn therebetween, a means mounting said frame upon ,sai for movement thereon'in the direction base in whichsaid ikey.'1sfdrawn across said cutting members, and spring means interposed between saidframe and said base, acting in 7 opposition V and permitting said frame and said cutting members to move relatively into the succesto sald movement of said frame, Y

sive notches of said key as the latter is drawn 7 across said cutting members.

10. In a device of the character described,

in combination, a substantially L-shaped frame having a substantially V-shaped cut ting edge adjacent the upper end of its vertical arm, a base, means pivotally connecting the upper end of the substantially horizontal arm ofsaid frame to said base, and spring means interposed between said substantially horizontal 'arms and said base. 7 I I 11. In a device of the character described, in combination, a rigid frame member having a substantially V-shaped cutting edge at one end thereof, a base, means pivotally connecting said frame member to said base at theother end of said frame member, and spring means interposed between said base and an intermediate portion of saidvframe member for yieldingly opposing movement of said frame member about its pivot under the urge of an implement drawn across said cutting edge. 7

12. In a device of the character described, in combination, a device comprising a metal member having a cutting edge across which Y an implement may be drawn, a base having a depressed portion adapted to enter a recess in a table or the like to which said base may be secured, means mounting said device upon said base for movement thereof under the urge of an implement drawn across and against said cutting edge, and spring means housed in said depressed portion for opposing movementof said device.

13. In a device of the character described,

in combination, a-device provided with cutting means across which an implement hav-' ing a susbtantially serrated edge may be drawn, a supporting member, and means including a yieldable portion for mounting said device for relative bodily movement at susbtantial amplitude toward and away from said supporting member, the tension of said yieldable member being insufficient to prevent movement of said device toward said supporting member under the urge of said implement and sufficient to cause said device to move in a direction away from said supportingmember and into depressions in the substantially serrated edge of said implement, said means including a pivotal connection between said device and said supporting member, said yieldable portion acting to control said movements of said device about the axis of the-pivotal connection.

In testimony whereof, I have signed my name to this specification this 31st day of December, 1926. a

' HENRY F. KEIL. 

